Dentsply Sirona Nupro RDH 740000 Installation, Maintenance And Operation Instructions Download Page 1

Mounting Disposable Prophy Angles  

(for Nupro RDH™ with U-Style Attachment only 
REF740000/740010)

To mount disposable angle to handpiece:  Push angle all the 
way into handpiece, making sure locating button on handpiece 
is seated into notch of angle.

To remove disposable angle from handpiece:  Grasp handpiece 
with one hand and pull angle from handpiece with other hand.

Mounting Color Bands

To change the color code of the handpiece, remove the color 
band as shown, and replace it with a new band of the desired 
color. 

Installation, Maintenance and Operation Instructions

Indications For Use

Nupro RDH™ handpiece is used for low speed procedures 
performed by dental professionals. 

Contraindications

None Known.

Warnings

STERILIZE BEFORE USE, SUPPLIED NON-STERILE.

WARNING: 

This product is intended for use by dental 

professionals only. Before operating handpiece, carefully 
read and follow these instructions and save them for future 
reference. Observe all cautions and warnings, including:

•  Handpieces should be heat-sterilized between patients to 

prevent cross-contamination which could result in serious 
illness or even death from infectious organisms such as HIV 
(the virus that causes AIDS) or hepatitis B.

•  It is the responsibility of the Dental Healthcare Professional 

to determine the appropriate use of this product and to 
understand the health of each patient, the dental procedures 
being undertaken, industry and governmental agency 
regulations, and recommendations and requirements for safe 
practice of dentistry.

Precautions

•  Do not operate handpiece unless prophy angle or cup is 

properly secured. A loose prophy angle could eject from the 
handpiece and cause personal injury.

•  Do not use angle, attachment or accessory that exhausts air 

within the oral cavity when a soft tissue wound is present. Air 
pressure may force septic materials into these tissues.

•  Before using, allow handpiece to cool completely after 

sterilization.

Adverse Reactions

None Known.

Step by Step Instructions

Checking Handpiece Hose

4-Tube Midwest 

Operation

To operate the handpiece, simply depress the foot control. 

Note:

 Never operate air motor under the following conditions:

1.  At air pressure exceeding 45 p.s.i. (3.1 Atm.).

2.  On an alternate hose without adjusting air pressure.

Automatic Oilers 

Since the use of automatic oiling does not eliminate the need 
for routine maintenance, the oiler should be disconnected. 
Do not use oil mist lubrication. (Excess oil may hinder 
performance.)

Speed Range

The Nupro RDH™ Handpiece offers exceptional torque at 
speeds up to 6000 RPM. 

Mounting Right Angle Attachment 

(for Nupro RDH™ with Right Angle Attachment only— 
REF 740020/740030)

A plastic head wrench has been provided for mounting or 
removing the prophy head.

To remove head: Place wrench over prophy head. Loosen head 
assembly by turning wrench counterclockwise. Unscrew and 
remove head with fingertips.

To install or replace head: Screw prophy head onto sheath 
assembly with fingers (clockwise). If the gears do not mesh 
properly, back head off 1/4 turn; then retighten. Lock head 
onto sheath by tightening with wrench.

Make sure prophy head is tightened securely before operating 
handpiece. 

Nupro RDH™

 

Hygienist Handpiece 
with Prophy Right Angle

Nupro RDH™

 

Hygienist Handpiece 

with U-style Attachment

REF 740020 / REF 740030

REF 740000 / REF 740010

Replaceable

Head

Remove

Make sure all tubes supplying the handpiece hose are properly 
connected within the dental unit. Test hose as follows:

1.  Hold free end of hose over cuspidor or towel while  

alternately depressing drive air pedal on foot control.

 

Note: 

The Nupro RDH™ Handpiece does not use chip-air or 

water spray. When connecting the Nupro RDH™ Handpiece, 
the water and chip air hose tubes can be disconnected and 
their supply connection plugged.

2.  Check to be sure that drive air is coming out of the  

correct tube.

Air Requirements

Nupro RDH™ Handpieces deliver maximum speed and  
torque when operated with clean, filtered, moisture-free  
air at the recommended operating pressure of 30-40 p.s.i.  
Air pressure may be reduced to a minimum of 20 p.s.i. to  
decrease operating speed

Initial Maintenance

Follow the reprocessing instructions before using your new 
Nupro RDH™ Handpiece.

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